/Engine/Source/Runtime/Engine/Classes/Engine/World.h
FTraceDelegate TraceDelegate; TraceDelegate.BindRaw(this, &MyActor::TraceDone);
[FTraceHandle](API\Runtime\Engine\FTraceHandle) AsyncSweepByChannel ( EAsyncTraceType InTraceType, const FVector & Start, const FVector & End, const FQuat & Rot, ECollisionChannel TraceChannel, const [FCollisionShape](API\Runtime\PhysicsCore\FCollisionShape) & CollisionShape, const [FCollisionQueryParams](API\Runtime\Engine\FCollisionQueryParams) & Params, const [FCollisionResponseParams](API\Runtime\Engine\FCollisionResponseParams) & ResponseParam, const FTraceDelegate * InDelegate, uint32 UserData )